Year	Millions of Persons
1960-01-01	3.65
1961-01-01	3.68
1962-01-01	3.70
1963-01-01	3.72
1964-01-01	3.78
1965-01-01	3.80
1966-01-01	3.81
1967-01-01	3.77
1968-01-01	3.81
1969-01-01	3.88
1970-01-01	3.95
1971-01-01	3.95
1972-01-01	3.96
1973-01-01	3.97
1974-01-01	4.05
1975-01-01	4.13
1976-01-01	4.15
1977-01-01	4.16
1978-01-01	4.17
1979-01-01	4.23
1980-01-01	4.28
1981-01-01	4.29
1982-01-01	4.28
1983-01-01	4.29
1984-01-01	4.32
1985-01-01	4.37
1986-01-01	4.40
1987-01-01	4.43
1988-01-01	4.49
1989-01-01	4.56
1990-01-01	4.60
1991-01-01	4.53
1992-01-01	4.33
1993-01-01	4.10
1994-01-01	4.06
1995-01-01	4.13
1996-01-01	4.10
1997-01-01	4.04
1998-01-01	4.11
1999-01-01	4.20
2000-01-01	4.30
2001-01-01	4.39
2002-01-01	4.39
2003-01-01	4.37
2004-01-01	4.34
2005-01-01	4.35
2006-01-01	4.42
2007-01-01	4.52
2008-01-01	4.57
2009-01-01	4.46
2010-01-01	4.50
2011-01-01	4.60